Metalized beads consist of a milky white plastic core and metallic coating. They are very affordable and come in a wide variety of shapes, sizes and patterns. Metalized beads can lend to a desired "chunky" look without adding a lot of weight. The metallic coating tends to chip off with frequent wear, but they are great for costume jewelry that is not intended for everyday use or for children's projects. Metalized beads that have been antiqued with a varnish stain tend to hold up better than those that have not, as the varnish forms a protective shell over the metallic coating.